I've watched two episodes of season 3 so far and I love it.
Quoting from this ABC article about the new season:
But which makes the better pet? And what should you think about if you've got a country dog in the city?
In collie breeder Mick Hudson's opinion, collies are "more trainable", whereas kelpies bring a greater "natural ability".
"Farmer gets him a kelpie, takes him into the paddock and he learns the job himself," he told ABC iview's Muster Dogs: Collies and Kelpies.
"At the end of the day, they're both Australian-bred dogs and both breeds will do the job.